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Deasserted

Deasserted-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Control methods and switching mode power supplies with improved dynamic response and reduced switching loss
Leadtrend Technology Corporation
March 01, 2018 - N°20180062527

A control method is used in a switching mode power supply to improve dynamic load response and switching loss. A pwm signal is provided to control a power switch and has a switching frequency. A cross voltage of a transformer in the switching mode power supply is detected to provide a de-magnetization time. The switching frequency is controlled in response ...
Wide range glitchless switchable clock divider with modified 2/3 divider stages
Silicon Laboratories Inc.
February 22, 2018 - N°20180054203

A divider includes 2/3 divider stages that may be turned off without toggling to extend the divide range of the divider while also reducing the impact of spurs on the divider output, and preserving the timing margin to update the divide ratio glitchlessly. A 2/3 divider stage responds to an input enable signal being deasserted and a modulus input signal being asserted ...
Nonvolatile semiconductor memory device and memory system
Kabushiki Kaisha Toshiba
May 04, 2017 - N°20170125092

A memory device includes a nonvolatile semiconductor memory cell array, a plurality of terminals through which control signals are received to control the memory device, an on-die termination circuit connected to at least one of the terminals and having a variable resistor, and a control circuit. The control circuit is configured to enable the on-die termination circuit in response to ...
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Low-flicker variable refresh rate display
Apple Inc.
July 07, 2016 - N°20160196802

An electronic device may have a variable refresh rate display. Static content may be displayed on the display at a lower refresh rate than moving content to conserve power. The display may include an array of pixels. Display driver circuitry in the display may load image data into rows of the pixels. The display driver circuitry may have digital-to-analog converter ...
Electronic device display with display driver power-down circuitry
Apple Inc.
December 03, 2015 - N°20150348487

Display driver circuitry loads data into display pixels. A regulator produces a power supply voltage for display driver circuitry that is measured by a monitor circuit. The monitor circuit asserts a mode selection signal in response to detection of a drop in power supply voltage during a power-down event. The display driver circuitry contains mode selection circuitry that is controlled ...
Method and circuit for detecting usb 3.0 lfps signal
Advanced Micro Devices, Inc.
March 05, 2015 - N°20150067209

A system and method for efficient detection of low frequency periodic signaling (lfps) input signals. A receiver receives two input differential signals that are lfps input signals. The receiver increases the common-mode voltage for each of the two input differential signals and determines two polarity opposite differences between the level shifted intermediate differential signals. The differences are used to generate ...
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Non-volatile memory using bi-directional resistive elements
September 18, 2014 - N°20140269008

A memory cell includes a first bidirectional resistive memory element (brme), and a second brme, a first storage node, and a second storage node . A resistive memory write to the cell includes placing the first brme and the second brme in complementary resistive states indicative of the value being written. During a subsequent restoration operation, the value as written in ...
Display circuitry with reduced pixel parasitic capacitor coupling
August 21, 2014 - N°20140232955

A touch screen display may have a color filter layer and a thin-film transistor layer. A layer of liquid crystal material may be located between the color filter layer and the thin-film transistor (tft) layer. The tft layer may include thin-film transistors formed on top of a glass substrate. Each display pixel in the tft layer may include first and ...
Method and apparatus for adaptive timing write control in a memory
August 07, 2014 - N°20140219002

A bit line, which is coupled to a resistive element of a memory cell is set to a first voltage level. The memory cell may be an mram cell or an rram cell. The resistive element is configured to have a first resistance in a first state of the memory cell and a second resistance in a second state of ...
Methods and apparatus for improving backlight driver efficiency
June 12, 2014 - N°20140159614

An electronic device may be provided with display circuitry that includes a display timing controller, a backlight driver, a light source, and other associated backlight structures. The backlight control circuitry may generate a control signal having an adjustable duty cycle to the backlight driver. The backlight driver may include a boost converter, a current driver, and backlight control circuitry. The ...
Apparatus and method for hidden-refresh modification
February 13, 2014 - N°20140043919

A system and method for modifying a hidden-refresh rate for dynamic memory cells includes monitoring a control signal from a processor and performing a hidden-refresh of dynamic data at a first refresh rate when the control signal is asserted. The dynamic data is refreshed at a second refresh rate when the control signal is deasserted for a predetermined duration. A ...
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Deasserted Patent Applications
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